Altered vaginal microbiome and relative co-abundance network in pregnant women with penicillin allergy

Area of Science:

• Microbiome research
• Reproductive health
• Allergy immunology

Background:

• Penicillin allergy is common in adults and children.
• The microbiota is increasingly recognized for its role in allergy development.
• The relationship between the vaginal microbiome and penicillin allergy in pregnant women was explored.

Purpose of the Study:

• To investigate the differences in vaginal microbiome composition between pregnant women with and without penicillin allergy.
• To identify specific bacterial taxa associated with penicillin allergy during pregnancy.

Main Methods:

• Vaginal samples were collected from 12 penicillin-allergic and 15 non-allergic pregnant women before labor.
• Bacterial community structure was analyzed using 16S rRNA sequencing (Illumina Hiseq 2500).
• Differences in microbial composition and co-abundance networks between groups were assessed.

Main Results:

• The most abundant phyla were Firmicutes, Actinobacteria, and Bacteroidetes, with Lactobacillus as the predominant genus.
• Penicillin-allergic pregnant women showed decreased levels of Actinobacteria, Coriobacteriaceae, Lachnospiraceae, Paraprevotella, and Anoxybacillus.
• Increased abundance of Deltaproteobacteria, Peptostreptococcaceae, Enterococcus, and Megamonas was observed in the penicillin-allergic group.
• Significant discrepancies in genus-level co-abundance networks were noted between the groups.

Conclusions:

• Distinct differences exist in the vaginal microbial community structure and composition between pregnant women with and without penicillin allergy.
• These observed microbial shifts may have implications for maternal and neonatal health.
• Further research is warranted to elucidate the causal links and clinical significance of these findings.